Elastic horseshoe-calk.



F. J. GLANVILLE.

ELASTIC HORSESHOE CALK.

APPLICATION FILED FEB. H, 1915.

1,177,099. Patented Mar. 28,1916.

%t st: inventor: by FM M My Famine. enANvILLE, or monnrsrown, New JERSEY.

nLAsrIcnonsEsHoE-cALK.

Specification of Letters Patent.

Patented Mar. as, rare.

Application filed February 11, 1916. Serial No. 77,581.

To all whom it may concern 'Be it known that I, FRANK J. GLANVILLE, a citizen of the United States, and a resident of the city of Morristown, in the county of Morris, State of New Jersey,have invented certain new and useful Improvements in Elastic Horseshoe-Calks, of which the following is a specification.

The invention relates to devices adapted to be attached to horse shoes for the purpose of providing an elastic and non-slip tread.-

It has for its objects, among others, the provision of a tread of this character of simple, strong and durable character and inexpensive construction, which may be quickly attached to or detached from the shoe, but will remain attached thereto under all the ordinary conditions and strains of use.

To these ends the invention consists in the construction and arrangement of parts hereinafter described and claimed, and illustrated in the accompanying drawings.

In the said drawings, Figure 1 is a plan of a shoe and calk embodying the improve ments; Fig. 2 is a side elevation; Fig. 3 is a bottom view; Fig. 4; is a vertical cross-section on the line H of Fig. 1; Fig. 5 is a similar section on the line 55 of Fig. 2, and Fig.'6 is an enlarged perspective of the connecting member between the elastic tread and the shoe.

The shoe A is of the usual form and is provided with four holes A for receiving the expansible sleeves B of the connecting member. These holes are shown as of the same diameter throughout, but may be made of varying diameter if desired. The central bore B of the sleeve is also of the same diameter throughout, but may be made of inwardly decreasing diameter if desired, so as to give more expansion.

The plate B is preferably integral with the sleeve B and has a downwardly extending portion B with an opening B through which a rivet C or other suitable connecting member passes in order to secure toit the elastic tread D. The said tread is provided with apertures D running through it and adapted to be alined with the central bore of the sleeve B and the opening in the plate B so that a small spike E may be passed therethrough and driven into the sleeve.

The outer surface of the tread is provided with corrugations D It is also preferably provided with reinforcing wires D run :ning through it lengthwise near the bottom and beneath the rivets C. These wires not only reinforce the tread but tend to make the hold offthe rivets more secure.

The calk is secured to the shoe by placing the expansible sleeves B in the apertures A of the shoe and then driving the nails E into the said sleeve and expanding them. This forms a secure connection which will resist all the stress of use. hen it is desired to remove the calk it is only necessary to drive the edge of an instrument, such as a chisel, in between the bottom surface of the shoe and the plate B and then pry the plate and the parts connected therewith loose. It will be observed that the shock caused by contact between the tread and the road surface will have a tendency to drive the nail E inward and thus make the connection more secure, instead of weakening it, and also when the elastic tread wears down in use it will be reinforced by this nail and also by the part B In this manner an elastic tread extending around the shoe witha metal reinforcement is provided, which will hold its position and maintain its efficiency until completely worn down, and which at the same time may be quickly removed and replaced when necessary. The shoe is also so constructed that it may be worn if desired without the calk and will be as serviceable and as durable as the ordinary shoe.

The details of construction herein de scribed and shown may be varied within certain limits without departing from the scope of the invention, and it is not the intention to limit the claims to such details of con struction except so far as they may be therein set'forth.

What I claim is:

1. A device of the character described, comprising a compressible tread, a shoe provided with apertures, metallic connecting members, means for securing the tread thereto, expansible members adapted to be placed in said apertures, and means for expanding the same therein.

2. A device of the character described, comprising a compressible tread, a shoe provided with apertures, metallic connecting members, means for securing the tread thereto, expansible members adapted to be placed in said apertures, and an expanding device adapted to be passed throu h the tread and driven into the said expansible members to exp nd the same.

3. A device of the character described, comprlslng a compressible tread, a shoe provided with recesses therein, metallic connecting members, means for securing the tread thereto, expansible members adapted to be placed in said apertures, and removable means for expanding the same therein.

4:. A device of the character described, comprising a compressible tread, a shoe pr0- vided with recesses therein, metallic connecting members, means for securing the tread thereto, an expansible sleeve adapted to be placed in said apertures, and removable means for expanding the same therein.

5. A device of the character described,,

comprising a compressible tread, a shoe provided With recesses therein, metallic connecting members, means for securing the tread thereto, hollow expansible members adapted to be placed in said apertures, and an expanding device adapted to be passed through the tread and driven into the said expansible members to expand the same.

6. The combination of a metallic shoe, provided with recesses therein, metallic con necting members having portions extending into said recesses, a flexible calk extending over the bottom of the shoe and connected with and also forming a connection between the said members, and means for expanding the portion of the connecting members within the recess.

Witness my hand this 7th day of February 1916, at the city of New York, in the county and State of New York.

FRANK J. GLANVILLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

